A place like the Right Livers' Rest was bound to draw freaks, same as molasses draws flies. 1935, George Goodchild, chapter 5, in Death on the Centre Court: By one o'clock the place was choc-a-bloc.
Swallowing certain types of poisons may cause excessive salivation. According to the National Library of Medicine, pesticides can cause excessive saliva when they are swallowed. Venom from snake bites or insect stings is another type of poisoning that can cause the malady.
If you smoke, you have a greater chance of having dry mouth. Some diseases such as diabetes can also lower the amount of saliva. Medications can also affect the amount of saliva you have. Some of the other causes of dry mouth include: 1  stress.